Hubble uses three Fine Guidance Sensors for steady pointing and measurement. Astronauts will exchange one of these optical sensors with a refurbished unit that has enhanced, on-orbit alignment capability during Hubble Space Telescope Servicing Mission 4.
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NASA ID
GSFC_20080822_HST_m10328_FGS_Remove_BTY_003
Date Created
August 22, 2008
Center
GSFC
Media Type
video
Location
Goddard Space Flight Center
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